Aims Power 12000 Watt Pure Sine Inverter Charger & 48V Lithium Battery Off Grid/Back Up Kit - KITC-12K48240

Aims Power 12000 Watt Pure Sine Inverter Charger & 48V Lithium Battery Off Grid/Back Up Kit - KITC-12K48240

Do you want a powerful back up power system, with minimal equipment and low maintenance? How about a system that can power multiple appliances such as a full size refrigerator/freezer, 240V pump, microwave, lights and much more during a power outage? This kit has been designed for the user that needs to power several items, for short periods of time, easily and with little equipment. One battery, one inverter, one set of cables and a safety fuse kit. That’s it! But don’t worry….this kit is packed with power.

The 12000 watt pure sine inverter charger 120/240V with a 36000 watt surge will keep your home, business or  large RV running as long as you have battery power. The inverter is packed with features including a powerful built in battery charger to recharge the battery when you have access to grid power. It also includes an automatic transfer switch that goes back and forth between grid and inverter power, automatically.  Also includes, auto generator start, battery temperature sensor, LCD/LED optional remotes and dip switches to set AC priority. The two battery packs provide 400 amps at 48 volts! This battery replaces multiple batteries and cables.

Built with lithium technology, this battery provides up to 8x more charge/discharge cycles than a lead, gel or AGM battery. The battery also delivers it’s full amp capacity. No need to worry about memory problems.

Features

• Industrial Grade High Amp Battery Capacity
• No battery memory problems
• Minimal labor
• Wall mountable
• Easy set up
• Low maintenance
• Expandable
• Extended warranties
• Quantity 1 – 12,000 watt pure sine inverter charger 120/240V split phase, 48V listed to UL standards – 
• Quantity 2 – 48V 200 AMP powerful lithium battery – 
• Jumper cables to connect batteries
• Fuse kit

What our Experts Think  

• The AIMS Power KITC-12K48240 is a flagship 12,000W pure sine wave inverter/charger system paired with a 48V lithium battery bank, designed for whole-home, commercial, and heavy off-grid backup power.
• Delivers 12kW continuous output with up to ~36,000W surge, making it capable of starting large motors, pumps, HVAC units, and multiple appliances simultaneously.
• Includes an integrated inverter + smart charger + automatic transfer switch, reducing system complexity to a near “single-box” energy solution.
• Comes bundled with high-capacity 48V lithium batteries (typically 2×200Ah class packs depending on configuration) for long-duration energy storage.
• Designed for split-phase 120/240V output, allowing direct support for residential electrical panels and heavy-duty appliances.
• Built-in features include generator auto-start, battery temperature sensing, multi-stage charging, and programmable AC priority modes.
• Engineered for true off-grid independence or high-reliability backup, with minimal external components required for deployment.

                 
Q&A

Q: What is the AIMS Power KITC-12K48240 12000W Pure Sine Inverter Charger & 48V Lithium Battery Kit?
A: The AIMS Power KITC-12K48240 is a complete off-grid/backup power system combining a 12,000W pure sine wave inverter/charger, 48V lithium battery storage, and installation accessories for high-capacity residential and commercial energy backup.

Q: How much power does it deliver?
A: It provides 12,000 watts of continuous output with up to 36,000 watts surge capacity, capable of running heavy loads like HVAC systems, pumps, refrigerators, and multiple household circuits.

Q: What comes in the kit?
A: The system typically includes a 12kW split-phase inverter/charger, two 48V lithium battery modules (around 400Ah total class), heavy-duty battery cables, jumper cables, and a fuse protection kit.

Q: What type of inverter is it?
A: It is a low-frequency pure sine wave inverter with split-phase 120V/240V output, designed for whole-home or large off-grid systems requiring stable utility-grade power.

Q: Does it include a built-in charger?
A: Yes. It features a multi-stage smart charger (up to ~120A) that supports lithium, AGM, gel, and lead-acid batteries for fast and efficient recharging.

Q: What smart features does it offer?
A: It includes automatic transfer switching (~10ms), generator auto-start, battery priority mode, AC input priority settings, and remote monitoring/control options.

Q: What battery technology is used?
A: The included lithium batteries use LiFePO4 chemistry with built-in BMS protection for long cycle life, safety, and stable high-current discharge performance.

Q: Is it suitable for whole-home backup?
A: Yes. It is designed for serious off-grid or backup applications where multiple high-power appliances must run simultaneously during outages.

Q: What makes this system stand out?
A: It simplifies large-scale power setups by combining inverter, charger, transfer switch, and high-capacity lithium storage into one integrated, high-output system with reduced wiring and installation complexity.

                   
Maintenance Tips    

• Install in a cool, dry, well-ventilated indoor space; the 12kW inverter and lithium bank generate significant heat under load.
• Keep fans, air intakes, and heat sinks dust-free to prevent overheating, derating, or thermal shutdown during heavy operation.
• Regularly inspect and torque-check 48V battery cables, inverter DC terminals, and grounding connections—high current flow makes loose connections a major failure risk.
• Monitor the system’s battery SOC, voltage stability, and inverter fault codes via LCD/remote panel to catch issues early.
• Ensure proper LiFePO₄ charging profile settings are selected to avoid under/overcharging and to preserve cycle life.
• Keep battery bank within the correct 48V operating range (~40–64V depending on state of charge) to avoid low/high voltage alarms.
• Periodically verify AC input (grid/generator), transfer switch, and auto-generator start functions for reliable backup operation.
• Avoid continuous operation near the full 12,000W output limit; maintain 20–30% load headroom for efficiency and longevity.
• Inspect fuse kits, breakers, and disconnects for heat discoloration or wear and replace immediately if damaged.
• If idle for long periods, store and maintain lithium batteries at a moderate charge level (not full or empty) to extend lifespan.